Hoisting device



(No Model.)

H. HAGELSTEIN.

HOISTING DEVICE.

No. 511,014. Patented Dec. 19, 1893.

min y 2 NATIONAL LITWDGRAFHMI: COMPANY UNITED STATES PATENT OFFICE.

HENRY HAGELSTEIN, OF SAN ANGELO, TEXAS.

HOlSTlNG DEVICE.

SPECIFICATION forming part of Letters Patent No. 511,014, dated December19, 1893.

Application filed August 16,1893. fierlal No. 483,295- (No model.)

To all whom it may concern.-

Be it known that I, HENRY HAGELSTEIN, a citizen of the United States,residing at San Angelo, in the county of Tom Green and State of Texas,have invented a new and useful Hoisting Device, of which the followingis a specification.

The invention relates to improvements in hoisting devices.

The object of the present invention is to provide a simple aninexpensive hoisting or lifting device adapted for extracting stumps,lifting stones and other heavy bodies, stretching wires, and for servingas a lifting jack for vehicles and analogous uses.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a perspective view of a lifting deviceconstructed in accordance with this invention and shown arranged forextracting stumps. Fig. 2 is a side elevation of the device detached.Fig. 3 is a longitudinal sectional view of the same.

Similar numerals of reference indicate corresponding parts in theseveral figures of the drawings.

1 designates a casin g, composed of two similar sides 2, and havingslidingly mounted in it between the sidesa rack-bar 3, provided at itslongitudinal edges with teeth 1, which are engaged by operating levers5, fulcrumed on the casing. The casing is provided at one end withlateral extensions 6, formed integral with the sides 2 and provided withbearingopenings 7, in which are loosely arranged pivots or trunnions 8,of the operating levers 5. The operating levers 5 are provided at theirinner ends with heads 8, of segmental form, provided at the curved edgeswith teeth for meshing with those of the rack-bar which may be movedeither inward or outward according to the character of the work to beperformed. The bearingopenings 7 are trefoil-shaped, and consist ofthree bearing recesses arranged in the form of a triangle as shown, theinner two forming bearings to en able the rackbar to be forced upwardand downward, and the outer recess being for the purpose of permittingthe segmental heads of the operating levers to be disengaged from therack-bar in order to obtain a new hold.

The rack-bar is held against outward move- 5 5 ment by an inclinedrectangular pawl 9, pivoted at the inner or upper ends of its sides,.which are provided with eyes, by a bolt 10 to the casing and arrangedon the outer faces of the sides of the latter. The pawl 9 is retained 6cin engagement with the teeth of the rack-bar by a spring 11, and isforced out of such engagement to allow the rack-bar to be moved freelyoutward, or in either direction Without the aid of the operating levers,by a cam lever 6 5 13, fulcrumed on the casing, and arranged to engagethe pawl adjacent to the outer end of the same. The spring 11 is aflatone secured at one end to the casing and bearing against a stop 14:,intermediate of its ends, and having its other end engaging the pawl.The teeth of the rack-bar are slightly oppositely-inclined, and theinclination of the pawl enables it to engage the teeth squarely attheirouter inclined edges to prevent the rack-bar from 7 moving outward;but the inner inclined edges of the teeth are adapted to move the pawloutward sufficiently to allow the teeth to pass under the same when therack-bar is moved inward by the operating levers. The rackbar isprovided with a longitudinal opening 15 and is guided in its movementslongitudinally by a block 16, arranged between the sides of the casingon a bolt 19, and the said bolt 10. The outer end of the rack-bar andthe opposite end of the casing are provided with clevis-loops '20 and21, for the reception of chains to enable the lifting device to besuspended from a supporting frame 22, as illustrated in Fig. 1 of theaccompanying or: drawings, and to be connected to a stump or other heavybody to be lifted.

The supporting frame is preferably in the form of a tripod,- and inlifting a load or extracting a stump the rack-bar is drawn out 5 fromthe casing and depends therefrom, whereby a downward movement of theoperating lovers will lift the rack-bar and move the same inward intothe casing.

The rack-bar may be connected with a fence mo wire for drawing thelatter to the desired tension; and one end of the casing is providedwith a foot piece 23 adapted to rest upon the ground or other support toenable the device to be employed as a lifting jack for vehicles. Inusing the device for a lifting jack the rackbar is placed beneath anaxle and it is moved upward and outward by the operating levers to liftthe adjacent wheel clear of the ground.

Where great strength is required, when the device is employed inconnection with heavy objects of any character, supplemental levers 24may be employed to increase the length of the operating levers. Thesupplemental levers or bars 24 are provided at their inner ends withloops 25 to receive the operating levers to detachably connect thesupplemental bars or levers to the same.

It will be readily apparent that the lifting device is simple andcomparatively inexpensive in construction, that it is strong anddurable, and that it may be readily applied to a variety of uses, suchas for extractingstumps, lifting heavy obj ects,stretchin g wires,serving as a wagon jack, and the like.

WVhat I claim is 1. In a lifting device, the combination of a casingprovided with lateral extensions having trefoil-shaped bearing-openingsconsisting of triangularly-arranged recesses, a longitudinally-movablerack-bar provided at its sides with teeth and slidingly mounted in thecasing, and the operating levers journaled in the bearing-openings andprovided with seg mental heads having teeth meshing with those of therack-bar, substantially as described.

2. In a lifting device, the combination of a casing, a rack-barslidingly mounted in the casing and provided with teeth, an operatinglever journaled on the casing and having a segmental head provided withteeth engaging the rack-bar, an inclined rectangular pawl pivoted to thecasing and engaging the teeth of the rack-bar, a spring for holding thepawl in such engagement, and a cam lever fulcrumed on the casing andarranged to engage the pawl to move the latter outward, substantially asdescribed.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

HENRY HAGELSTEIN.

Witnesses:

OSCAR RUFFINI, O. L. BROOME.

